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This lesson covers the key technologies that power the World Wide Web: HTML, CSS, JavaScript, server-side scripting, APIs, REST, and HTTP/HTTPS methods. These are part of the OCR H446 specification.
The World Wide Web (WWW) is a service that runs on the Internet, using HTTP/HTTPS to deliver web pages stored on web servers to clients (browsers).
| Component | Purpose |
|---|---|
| Web server | Stores and serves web pages |
| Web browser | Requests and displays web pages (client) |
| HTTP/HTTPS | Protocol for requesting and delivering web resources |
| URL | Uniform Resource Locator — the address of a web resource |
| HTML | Defines the structure and content of a web page |
| CSS | Defines the visual presentation (styling) |
| JavaScript | Adds interactivity and dynamic behaviour |
HTML is the standard markup language for creating web pages. It defines the structure and content of a page using tags.
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